PPHA-626: Education content update (#401)

# What is the change?

* Updated title
* Updated intro text

# Why are we making this change?

To align with prototype version 1.4

Author: stephhou

lung_cancer_screening/questions/jinja2/education.jinja

@@ -3,12 +3,10 @@
 
 {% block prelude %}
 
-  <h1 class="nhsuk-heading-l">Help us give you an accurate result by telling us about your education</h1>
+  <h1 class="nhsuk-heading-l">Your education</h1>
 
-  <p>Education is linked to other factors that may impact your chances of developing lung cancer.</p>
+  <p>We ask this question because education is linked to other factors that may impact your chances of developing lung cancer.</p>
 
-  <p>You do not have to tell us about your education but this may affect the accuracy of your result.</p>
-
-  <p>If you did not study in England choose the closest equivalent.</p>
+  <p>If your qualification is not shown, choose the closest level.</p>
 
 {% endblock prelude %}